The transit of Venus : its meaning and use / by T.H. Budd.

  • Budd, T. H. (Thomas Hayward)
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: The transit of Venus : its meaning and use / by T.H. Budd. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    from the two stations to travel, differ from each other in length to the extent they have been found to differ, and it is plain this is to be ascertained on the principle of Rule of Three sum. Having ascertained the diameter of the Sun in this way, all that remains to be done is to ascertain its distance from us, and this is done by comparing its ! actual diameter with its apparent diameter. There is no more difficulty in doing it than in ascertaining the ^ distance of a church steeple a great way off when you know its height. Before closing this little essay it may be as well to explain that it would be impossible to obtain a base line of 7,000 miles on exactly the same meridian. This, however, will complicate the observation very little, as all that is necessary under such circumstances is to make proper allowance for the time of day. ' LONDON : PRINTED flV SPOTTISWOODtt AND CO., NKW-STKKST SQl?ARE AND PARLIAMENT STREET